Yeah I had seen that, but I'm looking to run two sets of external mics into the same recorder.
You can use four external mics with the H4n: two mics connected to the XLR inputs running on phantom power and another two connected to the 3.5 mm stereo jack beneath the built-in mics. For the 3.5 mm jack, you'd have to use mics running on their own power or plug-in power or you'd need to connect them through a battery-powered phantom adapter.
I've used my H4n with two stereo bars and two Rode NT-2A on a mic stand for quad channel atmo recordings during our xmas vacation and they've turned out fine.
This is what it looks like:
http://www.fotoralf.de/temp/D-09-12806.jpgNext, I'll test the version with four external mics using a small portable 12-to-48 V adapter.
If anyone is able to playback Fraunhofer surround MP3s or DTS I could upload an example of Dunkirk harbour noises recorded with this set-up.
Ralf